R-ratio

常見例句

• To reduce the impurities and prolong the catalyst life, it is necessary to pay attention to the R ratio (H2-CO2/CO+CO2), CO/CO2 ratio and CO2 content.
  要減少襍質(zhì)含量和延長催化劑使用壽命，除需要充分注意原料氣中R值之外，還需注意CO/CO2之比值和CO2的含量。
• R ratio to total posterior wall excursion(R/PWE) was also decreased,while the slow filling fraction(SFF) and arterial filly fration(AFF) were increased correspondingly.
  而慢充盈分數(shù) (SFF) ,心房充盈分數(shù) (AFF)卻相應增加。
• The ratio of students to teachers is 35:1.
  學生和老師的比率是三十五比一。
• The ratio of schoolboys to schoolgirls is 2 to 1.
  男學生和女學生的比例是2比1。
• Men outnumber women here in the ratio of three to one.
  此地男子數(shù)量以三比一超過女子。
• The first or last term of a ratio or a series.
  首項，末項比率或數(shù)列中第一個或最後一個項
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